package br.ufc.pet.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Servlet Filter implementation class LoginFilter
 */
@WebFilter("/*")
public class LoginFilter implements Filter {

	/**
	 * Default constructor.
	 */
	public LoginFilter() {
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		String path = req.getContextPath();
		HttpSession session = req.getSession(false);

		if (req.getRequestURI().contains("login") || req.getRequestURI().contains("erro") || req.getRequestURI().contains("certificado") || req.getRequestURI().contains(".css") || req.getRequestURI().contains(".js")) {
			chain.doFilter(request, response);
		} else if (session != null && session.getAttribute("admin") != null) {
			chain.doFilter(request, response);
		} else {
			resp.sendRedirect(path + "/login.xhtml");
		}

	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
